Soft-coal heating-stove.



PATENTED DEC. 5, 1905.

H. R. GOWLES. SOFT COAL HEATING STOVE.

APPLwATIoN FILED APB. 2z, 1905.

UNITED sTATEs PATENT oEEioE.

HARRY R. OOWLES, OF PEORIA, ILLINOIS, ASSIGNOR TO OUTLER &

PROO'IOR STOVE COMPANY, OF PEORIA, ILLINOIS, A CORPORA- TION OF ILLINOIS.

specification of Lettef Patent.

.Patented Dec. 5, 1905.

' Application iled April Z2, 1905. Serial No. 256,870.

To @LZ whom it may concern:

Be it known that I, HARRY R. OowLEs, acitizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Soft-Coal Heating-Stoves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of my invention is to produce a self-feeding magazine heating-stove adapted for burning soft or bituminouscoal, which so far as I know and can lind has not hitherto been successfully done, and there is no such magazine-stove in the trade, for the reason that cerlftain difficulties have not been overcome, chief among which is the burning and consequent coking and choking of the soft coal in the magazine and the difficulty of feeding such coal from the magazine. In these matters my improvements have rendered such stove a success, and in the claims appended hereto I will set out the features which constitute my invention in connection with the accompanying drawings, in which- Figure 1 is a vertical section of so much of a magazine heating-stove as illustrates my invention, the top being in partial perspective and the section taken on the line a a of Fig. 2. Fig. 2 is a top view showing the feed cover-plate'for the top of the magazine and the downdraft-regulating register.

My invention is used with what is known as the hot-blast downdraft magazine-heater and in which the drum or inclosing case 1 is preferably of sheet-steel supported upon the lire-pot 2 and closed at its top by a cast-iron cover 3, having a central circular opening the edge of which terminates in a sunken rim or ledge 4, upon which is seated and hangs within the drum a cast-iron cylinder 5, being formed for that purpose with a suspending rim 6. Upon this rim ris seated a cast-iron ring 7 the inner edge 8 of which is made upwardly Haring and has a depending ring-collar 9, to Which the upper edge of the magazine 10 is secured and is suspended within the depending cylinder and terminates above the top of the fire-pot and forms with the cylinder the hot-air-downdraft space 11, which opensinto the combustion-chamber above the lower edge 0f the magazine.

The magazine is made of heavy sheet-steel having a perfectly-smooth inner wall and is renderedl as nearly air-tight as possible by a cast-iron feed-cover 12, made to t with a tight joint the flaring edge of the ring and iiush with its top surface, so that when the feedcover is closed the magazine will be free from air-drafts. To render it self-feeding'for soft coal, the magazine is made gradually increasing in diameter from its feed to its dischargeend and is kept comparatively cool by the surrounding air-chamber, so that there can be no ignition or burning and coking and choking of the coal within the magazine, and allowing it thereby to feed freely as it is consumed in the fire-pot.

It will be noticed that the lower edge of the cast-iron cylinder which forms the air-space is made aring and terminates above the magazine, so that the hot air descending through the annular air-space is delivered therefrom and directed toward the outer edge of the re above the fire-pot where the gases are formed at the surface of the fire, and thereby causes complete combustion. The construction of the grate 13 is such as to promote this combus.

tion by reason of having its central part 14 solid and conical and only a comparatively small grate portion between the fire-pot wall joining the base of the solid cone and providing a less quantityof air beneath the fire. A ring-register plate 15, seated in an annular groove or sink in the top ring, serves to control openings 16 in said ring to regulate the down air-blast, asin Fig. 2. This ring is the important element by which the magazine is suspended, which forms the seat for the feedcover, and which carries the downdraft-regulating register. The ring as a support for these parts may be easily removed, and with it the magazine, and set in place. The inclosing drum forms thecombuston-chamber and has the collar 17 for the smoke-pipe. The feedcover of the magazine does not swing horizontally, but vertically, being opened and closed on its hinge 18 by the urn, (which is not shown, but which is fixed to said cover.) The feed-cover is a fiat plate and is thicker around its beveled circumferential edge the b etter to form a tight joint on its seat on the ring.

By having the air-tight magazine the coal does not burn directly Within its open end,

IOO

but is decomposed, so that it readily ignites as it feeds down into the fire-pot, and by having the magazine terminate below the Haring end of its inclosing cylinder the down air-draft isy caused to pass out and spread over the outer edge of the tire in the lire-pot and to freely rise and mix with the gases in the combustionchamber above the fire-pot.

I prefer to make the magazine of sheet-steel, because it has a smoot`h-surfaced Wall; but it may be of cast-iron, having its inner Wall made' smooth.

I claim- 1. In a heating-stove, the drumor casing, a cover-platel therefor having a circular central opening its edge terminating in a sunken rim or ledge, a cylinder seated upon and depending from said sunken ledge, a ring seated upon the suspending edge of said cylinder and having a depending collar, a magazine having a smooth inner Wall, secured to and suspended from said ring-collar Within said cylinder and Haring from its feed to its discharging end, and a feed-cover adapted to form an air-tight joint With said ring.

2. In a heating-stove, the drum or casing, a cover-plate therefor having a circular central opening, its edge terminating in a sunken rim or ledge, a cylinder seated upon and depending from said sunken ledge, a ring seated upon the suspending edge of said cylinder and having a depending collar, a magazine having a smooth inner Wall. secured to and suspended from said ring-collar Within said cylinder, forming with it an annular downdraft-space, and flaring from its feed to its discharge end,

a feed-cover adapted to form an air-tight joint With said ring, a ring-register plate in asunlien seat in said magazine-suspending ring and controlling draft-openings in said ring, the magazine-inclosing cylinder terminating above the discharging end of the magazine in a flaring opening.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

HARRY R. COWLES.

Witnesses:

MATILDA S. RITscHnL, J. CARSON Fox. 

